:root {
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --secondary: #6B7280;
    --secondary-hover: #4B5563;
    --danger: #EF4444;
    --danger-hover: #DC2626;
    
    --bg-color: #F3F4F6;
    --surface-color: #FFFFFF;
    --surface-border: #E5E7EB;
    
    --text-main: #111827;
    --text-muted: #6B7280;
    
    --input-bg: #F9FAFB;
    --input-border: #D1D5DB;
    --input-focus: #3B82F6;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    
    --transition: all 0.2s ease;
}

[data-theme="dark"] {
    --bg-color: #0F172A;
    --surface-color: #1E293B;
    --surface-border: #334155;
    
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    
    --input-bg: #0F172A;
    --input-border: #334155;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    transition: background-color 0.3s, color 0.3s;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--surface-color);
    border-right: 1px solid var(--surface-border);
    display: flex;
    flex-direction: column;
    padding: 1.5rem 1rem;
    transition: var(--transition);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    padding: 0 0.5rem;
}

.brand-icon {
    background: linear-gradient(135deg, var(--primary), #8B5CF6);
    color: white;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.nav-item:hover {
    background-color: var(--bg-color);
    color: var(--text-main);
}

.nav-item.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary);
}

.sidebar-bottom {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--surface-border);
    display: flex;
    justify-content: center;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0.5rem;
    border-radius: var(--radius-full);
    transition: var(--transition);
}

.theme-toggle:hover {
    color: var(--text-main);
    background-color: var(--bg-color);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 3rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.top-header {
    margin-bottom: 2rem;
}

.top-header h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.top-header p {
    color: var(--text-muted);
    font-size: 1rem;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

/* Cards */
.card {
    background-color: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--surface-border);
}

.card-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.required {
    color: var(--danger);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
}

input[type="text"],
input[type="password"],
select {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: var(--transition);
}

input[type="text"]:focus,
input[type="password"]:focus,
select:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
}

.form-row {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
}

/* Toggle Switch */
.toggle-switch {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 22px;
    background-color: var(--input-border);
    border-radius: 34px;
    transition: .4s;
    margin-right: 0.75rem;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    border-radius: 50%;
    transition: .4s;
}

input:checked + .slider {
    background-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(18px);
}

.toggle-label {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background-color: var(--input-bg);
    color: var(--text-main);
    border: 1px solid var(--input-border);
}

.btn-secondary:hover {
    background-color: var(--surface-border);
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}

.btn-danger:hover {
    background-color: var(--danger-hover);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Result Section */
.result-card {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 3rem 2rem;
    text-align: center;
    min-height: 480px;
}

.result-placeholder {
    color: var(--text-muted);
}

.placeholder-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.qr-result {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.hidden {
    display: none !important;
}

.qr-container {
    background-color: white; /* Always white for good contrast on QR */
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 1.5rem;
    position: relative;
}

.qr-logo-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.5rem;
    box-shadow: 0 0 0 4px white;
}

/* Hide logo if qrious doesn't support center cutouts well */
/* .qr-logo-overlay { display: none; } */

.network-info {
    margin-bottom: 2rem;
}

.network-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    word-break: break-all;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    width: 100%;
    justify-content: center;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 1;
    transition: var(--transition);
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--surface-border);
    transform: translateY(0);
    transition: var(--transition);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-overlay.hidden .modal {
    transform: translateY(20px);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--surface-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.close-modal {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.25rem;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--text-main);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--surface-border);
    display: flex;
    justify-content: flex-end;
}

.history-empty {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem 0;
}

.history-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.history-item:hover {
    border-color: var(--primary);
    background-color: rgba(59, 130, 246, 0.05);
}

.history-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.history-ssid {
    font-weight: 600;
}

.history-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Print Container - Hidden by default */
.print-container {
    display: none;
}

@media print {
    body * {
        visibility: hidden;
    }
    .print-container, .print-container * {
        visibility: visible;
    }
    .print-container {
        display: block;
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        text-align: center;
        padding-top: 2in;
    }
    .print-card {
        border: 2px solid #000;
        padding: 40px;
        display: inline-block;
        border-radius: 16px;
    }
    .print-card h2 {
        font-family: sans-serif;
        margin-bottom: 20px;
        font-size: 24pt;
    }
    .print-qr img {
        width: 300px;
        height: 300px;
        margin-bottom: 20px;
    }
    .print-details {
        font-family: monospace;
        font-size: 14pt;
        text-align: center;
    }
    .print-details p {
        margin: 10px 0;
    }
}

/* Responsive */
@media (max-width: 900px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }
    .result-card {
        min-height: auto;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--surface-border);
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 1rem;
    }
    
    .brand {
        margin-bottom: 0;
    }
    
    .nav-menu {
        flex-direction: row;
        flex: none;
    }
    
    .nav-item span {
        display: none; /* Hide text on mobile */
    }
    
    .sidebar-bottom {
        border-top: none;
        padding-top: 0;
        margin-top: 0;
    }
    
    .main-content {
        padding: 1.5rem 1rem;
    }
}